[deliverable/linux.git] / drivers / media / radio / radio-aztech.c

/* radio-aztech.c - Aztech radio card driver for Linux 2.2
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 * Adapted to support the Video for Linux API by
 * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
 *
 * Quay Ly
 * Donald Song
 * Jason Lewis      (jlewis@twilight.vtc.vsc.edu)
 * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
 * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
 *
 * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
 * along with more information on the card itself.
 *
 * History:
 * 1999-02-24	Russell Kroll <rkroll@exploits.org>
 *		Fine tuning/VIDEO_TUNER_LOW
 * 		Range expanded to 87-108 MHz (from 87.9-107.8)
 *
 * Notable changes from the original source:
 * - includes stripped down to the essentials
 * - for loops used as delays replaced with udelay()
 * - #defines removed, changed to static values
 * - tuning structure changed - no more character arrays, other changes
*/

#include <linux/module.h>	/* Modules 			*/
#include <linux/init.h>		/* Initdata			*/
#include <linux/ioport.h>	/* request_region		*/
#include <linux/delay.h>	/* udelay			*/
#include <asm/io.h>		/* outb, outb_p			*/
#include <asm/uaccess.h>	/* copy to/from user		*/
#include <linux/videodev2.h>	/* kernel radio structs		*/
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>

#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)

static struct v4l2_queryctrl radio_qctrl[] = {
	{
		.id            = V4L2_CID_AUDIO_MUTE,
		.name          = "Mute",
		.minimum       = 0,
		.maximum       = 1,
		.default_value = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_AUDIO_VOLUME,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 0xff,
		.step          = 1,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */

#ifndef CONFIG_RADIO_AZTECH_PORT
#define CONFIG_RADIO_AZTECH_PORT -1
#endif

static int io = CONFIG_RADIO_AZTECH_PORT;
static int radio_nr = -1;
static int radio_wait_time = 1000;
static struct mutex lock;

struct az_device
{
	unsigned long in_use;
	int curvol;
	unsigned long curfreq;
	int stereo;
};

static int volconvert(int level)
{
	level>>=14;		/* Map 16bits down to 2 bit */
	level&=3;

	/* convert to card-friendly values */
	switch (level)
	{
		case 0:
			return 0;
		case 1:
			return 1;
		case 2:
			return 4;
		case 3:
			return 5;
	}
	return 0;	/* Quieten gcc */
}

static void send_0_byte (struct az_device *dev)
{
	udelay(radio_wait_time);
	outb_p(2+volconvert(dev->curvol), io);
	outb_p(64+2+volconvert(dev->curvol), io);
}

static void send_1_byte (struct az_device *dev)
{
	udelay (radio_wait_time);
	outb_p(128+2+volconvert(dev->curvol), io);
	outb_p(128+64+2+volconvert(dev->curvol), io);
}

static int az_setvol(struct az_device *dev, int vol)
{
	mutex_lock(&lock);
	outb (volconvert(vol), io);
	mutex_unlock(&lock);
	return 0;
}

/* thanks to Michael Dwyer for giving me a dose of clues in
 * the signal strength department..
 *
 * This card has a stereo bit - bit 0 set = mono, not set = stereo
 * It also has a "signal" bit - bit 1 set = bad signal, not set = good
 *
 */

static int az_getsigstr(struct az_device *dev)
{
	if (inb(io) & 2)	/* bit set = no signal present */
		return 0;
	return 1;		/* signal present */
}

static int az_getstereo(struct az_device *dev)
{
	if (inb(io) & 1) 	/* bit set = mono */
		return 0;
	return 1;		/* stereo */
}

static int az_setfreq(struct az_device *dev, unsigned long frequency)
{
	int  i;

	frequency += 171200;		/* Add 10.7 MHz IF		*/
	frequency /= 800;		/* Convert to 50 kHz units	*/

	mutex_lock(&lock);

	send_0_byte (dev);		/*  0: LSB of frequency       */

	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)  */
		if (frequency & (1 << i))
			send_1_byte (dev);
		else
			send_0_byte (dev);

	send_0_byte (dev);		/* 14: test bit - always 0    */
	send_0_byte (dev);		/* 15: test bit - always 0    */
	send_0_byte (dev);		/* 16: band data 0 - always 0 */
	if (dev->stereo)		/* 17: stereo (1 to enable)   */
		send_1_byte (dev);
	else
		send_0_byte (dev);

	send_1_byte (dev);		/* 18: band data 1 - unknown  */
	send_0_byte (dev);		/* 19: time base - always 0   */
	send_0_byte (dev);		/* 20: spacing (0 = 25 kHz)   */
	send_1_byte (dev);		/* 21: spacing (1 = 25 kHz)   */
	send_0_byte (dev);		/* 22: spacing (0 = 25 kHz)   */
	send_1_byte (dev);		/* 23: AM/FM (FM = 1, always) */

	/* latch frequency */

	udelay (radio_wait_time);
	outb_p(128+64+volconvert(dev->curvol), io);

	mutex_unlock(&lock);

	return 0;
}

static int vidioc_querycap (struct file *file, void  *priv,
					struct v4l2_capability *v)
{
	strlcpy(v->driver, "radio-aztech", sizeof (v->driver));
	strlcpy(v->card, "Aztech Radio", sizeof (v->card));
	sprintf(v->bus_info,"ISA");
	v->version = RADIO_VERSION;
	v->capabilities = V4L2_CAP_TUNER;
	return 0;
}

static int vidioc_g_tuner (struct file *file, void *priv,
				struct v4l2_tuner *v)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	if (v->index > 0)
		return -EINVAL;

	strcpy(v->name, "FM");
	v->type = V4L2_TUNER_RADIO;

	v->rangelow=(87*16000);
	v->rangehigh=(108*16000);
	v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
	v->capability=V4L2_TUNER_CAP_LOW;
	if(az_getstereo(az))
		v->audmode = V4L2_TUNER_MODE_STEREO;
	else
		v->audmode = V4L2_TUNER_MODE_MONO;
	v->signal=0xFFFF*az_getsigstr(az);

	return 0;
}


static int vidioc_s_tuner (struct file *file, void *priv,
				struct v4l2_tuner *v)
{
	if (v->index > 0)
		return -EINVAL;

	return 0;
}

static int vidioc_g_audio (struct file *file, void *priv,
			   struct v4l2_audio *a)
{
	if (a->index > 1)
		return -EINVAL;

	strcpy(a->name, "Radio");
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
{
	*i = 0;
	return 0;
}

static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
	if (i != 0)
		return -EINVAL;
	return 0;
}


static int vidioc_s_audio (struct file *file, void *priv,
			   struct v4l2_audio *a)
{
	if (a->index != 0)
		return -EINVAL;

	return 0;
}

static int vidioc_s_frequency (struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	az->curfreq = f->frequency;
	az_setfreq(az, az->curfreq);
	return 0;
}

static int vidioc_g_frequency (struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	f->type = V4L2_TUNER_RADIO;
	f->frequency = az->curfreq;

	return 0;
}

static int vidioc_queryctrl (struct file *file, void *priv,
			    struct v4l2_queryctrl *qc)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
		if (qc->id && qc->id == radio_qctrl[i].id) {
			memcpy(qc, &(radio_qctrl[i]),
						sizeof(*qc));
			return (0);
		}
	}
	return -EINVAL;
}

static int vidioc_g_ctrl (struct file *file, void *priv,
			    struct v4l2_control *ctrl)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	switch (ctrl->id) {
		case V4L2_CID_AUDIO_MUTE:
			if (az->curvol==0)
				ctrl->value=1;
			else
				ctrl->value=0;
			return (0);
		case V4L2_CID_AUDIO_VOLUME:
			ctrl->value=az->curvol * 6554;
			return (0);
	}
	return -EINVAL;
}

static int vidioc_s_ctrl (struct file *file, void *priv,
			    struct v4l2_control *ctrl)
{
	struct video_device *dev = video_devdata(file);
	struct az_device *az = dev->priv;

	switch (ctrl->id) {
		case V4L2_CID_AUDIO_MUTE:
			if (ctrl->value) {
				az_setvol(az,0);
			} else {
				az_setvol(az,az->curvol);
			}
			return (0);
		case V4L2_CID_AUDIO_VOLUME:
			az_setvol(az,ctrl->value);
			return (0);
	}
	return -EINVAL;
}

static struct az_device aztech_unit;

static int aztech_exclusive_open(struct inode *inode, struct file *file)
{
	return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0;
}

static int aztech_exclusive_release(struct inode *inode, struct file *file)
{
	clear_bit(0, &aztech_unit.in_use);
	return 0;
}

static const struct file_operations aztech_fops = {
	.owner		= THIS_MODULE,
	.open           = aztech_exclusive_open,
	.release        = aztech_exclusive_release,
	.ioctl		= video_ioctl2,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= v4l_compat_ioctl32,
#endif
	.llseek         = no_llseek,
};

static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
	.vidioc_querycap    = vidioc_querycap,
	.vidioc_g_tuner     = vidioc_g_tuner,
	.vidioc_s_tuner     = vidioc_s_tuner,
	.vidioc_g_audio     = vidioc_g_audio,
	.vidioc_s_audio     = vidioc_s_audio,
	.vidioc_g_input     = vidioc_g_input,
	.vidioc_s_input     = vidioc_s_input,
	.vidioc_g_frequency = vidioc_g_frequency,
	.vidioc_s_frequency = vidioc_s_frequency,
	.vidioc_queryctrl   = vidioc_queryctrl,
	.vidioc_g_ctrl      = vidioc_g_ctrl,
	.vidioc_s_ctrl      = vidioc_s_ctrl,
};

static struct video_device aztech_radio = {
	.name		= "Aztech radio",
	.fops           = &aztech_fops,
	.ioctl_ops 	= &aztech_ioctl_ops,
	.release	= video_device_release_empty,
};

module_param_named(debug,aztech_radio.debug, int, 0644);
MODULE_PARM_DESC(debug,"activates debug info");

static int __init aztech_init(void)
{
	if(io==-1)
	{
		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
		return -EINVAL;
	}

	if (!request_region(io, 2, "aztech"))
	{
		printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	mutex_init(&lock);
	aztech_radio.priv=&aztech_unit;

	if (video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
		release_region(io,2);
		return -EINVAL;
	}

	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
	/* mute card - prevents noisy bootups */
	outb (0, io);
	return 0;
}

MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the Aztech radio card.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
module_param(radio_nr, int, 0);
MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");

static void __exit aztech_cleanup(void)
{
	video_unregister_device(&aztech_radio);
	release_region(io,2);
}

module_init(aztech_init);
module_exit(aztech_cleanup);
Commit	Line	Data
4286c6f6	1	/* radio-aztech.c - Aztech radio card driver for Linux 2.2
1da177e4	2	*
a4366af4	3	* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
4286c6f6	4	* Adapted to support the Video for Linux API by
1da177e4 LT	5	* Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
	6	*
	7	* Quay Ly
	8	* Donald Song
4286c6f6	9	* Jason Lewis (jlewis@twilight.vtc.vsc.edu)
1da177e4 LT	10	* Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
	11	* William McGrath (wmcgrath@twilight.vtc.vsc.edu)
	12	*
	13	* The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
	14	* along with more information on the card itself.
	15	*
	16	* History:
	17	* 1999-02-24 Russell Kroll <rkroll@exploits.org>
	18	* Fine tuning/VIDEO_TUNER_LOW
	19	* Range expanded to 87-108 MHz (from 87.9-107.8)
	20	*
	21	* Notable changes from the original source:
	22	* - includes stripped down to the essentials
	23	* - for loops used as delays replaced with udelay()
	24	* - #defines removed, changed to static values
	25	* - tuning structure changed - no more character arrays, other changes
	26	*/
	27
	28	#include <linux/module.h> /* Modules */
	29	#include <linux/init.h> /* Initdata */
fb911ee8	30	#include <linux/ioport.h> /* request_region */
1da177e4 LT	31	#include <linux/delay.h> /* udelay */
	32	#include <asm/io.h> /* outb, outb_p */
	33	#include <asm/uaccess.h> /* copy to/from user */
a4366af4	34	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	35	#include <media/v4l2-common.h>
35ea11ff	36	#include <media/v4l2-ioctl.h>
1da177e4	37
a4366af4 MCC	38	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	39	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	40
	41	static struct v4l2_queryctrl radio_qctrl[] = {
	42	{
	43	.id = V4L2_CID_AUDIO_MUTE,
	44	.name = "Mute",
	45	.minimum = 0,
	46	.maximum = 1,
	47	.default_value = 1,
	48	.type = V4L2_CTRL_TYPE_BOOLEAN,
	49	},{
	50	.id = V4L2_CID_AUDIO_VOLUME,
	51	.name = "Volume",
	52	.minimum = 0,
	53	.maximum = 0xff,
	54	.step = 1,
	55	.default_value = 0xff,
	56	.type = V4L2_CTRL_TYPE_INTEGER,
	57	}
	58	};
	59
1da177e4 LT	60	/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
	61
	62	#ifndef CONFIG_RADIO_AZTECH_PORT
	63	#define CONFIG_RADIO_AZTECH_PORT -1
	64	#endif
	65
4286c6f6	66	static int io = CONFIG_RADIO_AZTECH_PORT;
1da177e4 LT	67	static int radio_nr = -1;
1da177e4 LT	68	static int radio_wait_time = 1000;
3593cab5	69	static struct mutex lock;
1da177e4 LT	70
	71	struct az_device
	72	{
3ca685aa	73	unsigned long in_use;
1da177e4 LT	74	int curvol;
	75	unsigned long curfreq;
	76	int stereo;
	77	};
	78
	79	static int volconvert(int level)
	80	{
4286c6f6 MCC	81	level>>=14; /* Map 16bits down to 2 bit */
	82	level&=3;
	83
1da177e4	84	/* convert to card-friendly values */
4286c6f6	85	switch (level)
1da177e4	86	{
4286c6f6	87	case 0:
1da177e4	88	return 0;
4286c6f6	89	case 1:
1da177e4 LT	90	return 1;
	91	case 2:
	92	return 4;
	93	case 3:
	94	return 5;
	95	}
	96	return 0; /* Quieten gcc */
	97	}
	98
	99	static void send_0_byte (struct az_device *dev)
	100	{
	101	udelay(radio_wait_time);
	102	outb_p(2+volconvert(dev->curvol), io);
	103	outb_p(64+2+volconvert(dev->curvol), io);
	104	}
	105
	106	static void send_1_byte (struct az_device *dev)
	107	{
	108	udelay (radio_wait_time);
	109	outb_p(128+2+volconvert(dev->curvol), io);
	110	outb_p(128+64+2+volconvert(dev->curvol), io);
	111	}
	112
	113	static int az_setvol(struct az_device *dev, int vol)
	114	{
3593cab5	115	mutex_lock(&lock);
1da177e4	116	outb (volconvert(vol), io);
3593cab5	117	mutex_unlock(&lock);
1da177e4 LT	118	return 0;
	119	}
	120
	121	/* thanks to Michael Dwyer for giving me a dose of clues in
	122	* the signal strength department..
	123	*
	124	* This card has a stereo bit - bit 0 set = mono, not set = stereo
	125	* It also has a "signal" bit - bit 1 set = bad signal, not set = good
	126	*
	127	*/
	128
	129	static int az_getsigstr(struct az_device *dev)
	130	{
	131	if (inb(io) & 2) /* bit set = no signal present */
	132	return 0;
	133	return 1; /* signal present */
	134	}
	135
	136	static int az_getstereo(struct az_device *dev)
	137	{
	138	if (inb(io) & 1) /* bit set = mono */
	139	return 0;
	140	return 1; /* stereo */
	141	}
	142
	143	static int az_setfreq(struct az_device *dev, unsigned long frequency)
	144	{
	145	int i;
	146
	147	frequency += 171200; /* Add 10.7 MHz IF */
	148	frequency /= 800; /* Convert to 50 kHz units */
4286c6f6	149
3593cab5	150	mutex_lock(&lock);
4286c6f6	151
1da177e4 LT	152	send_0_byte (dev); /* 0: LSB of frequency */
	153
	154	for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
	155	if (frequency & (1 << i))
	156	send_1_byte (dev);
	157	else
	158	send_0_byte (dev);
	159
	160	send_0_byte (dev); /* 14: test bit - always 0 */
	161	send_0_byte (dev); /* 15: test bit - always 0 */
	162	send_0_byte (dev); /* 16: band data 0 - always 0 */
	163	if (dev->stereo) /* 17: stereo (1 to enable) */
	164	send_1_byte (dev);
	165	else
	166	send_0_byte (dev);
	167
	168	send_1_byte (dev); /* 18: band data 1 - unknown */
	169	send_0_byte (dev); /* 19: time base - always 0 */
	170	send_0_byte (dev); /* 20: spacing (0 = 25 kHz) */
	171	send_1_byte (dev); /* 21: spacing (1 = 25 kHz) */
	172	send_0_byte (dev); /* 22: spacing (0 = 25 kHz) */
	173	send_1_byte (dev); /* 23: AM/FM (FM = 1, always) */
	174
	175	/* latch frequency */
	176
	177	udelay (radio_wait_time);
	178	outb_p(128+64+volconvert(dev->curvol), io);
4286c6f6	179
3593cab5	180	mutex_unlock(&lock);
1da177e4 LT	181
	182	return 0;
	183	}
	184
99218fe4 MCC	185	static int vidioc_querycap (struct file file, void priv,
	186	struct v4l2_capability *v)
	187	{
	188	strlcpy(v->driver, "radio-aztech", sizeof (v->driver));
	189	strlcpy(v->card, "Aztech Radio", sizeof (v->card));
	190	sprintf(v->bus_info,"ISA");
	191	v->version = RADIO_VERSION;
	192	v->capabilities = V4L2_CAP_TUNER;
	193	return 0;
	194	}
	195
	196	static int vidioc_g_tuner (struct file file, void priv,
	197	struct v4l2_tuner *v)
1da177e4 LT	198	{
	199	struct video_device *dev = video_devdata(file);
	200	struct az_device *az = dev->priv;
4286c6f6	201
99218fe4 MCC	202	if (v->index > 0)
99218fe4 MCC	203	return -EINVAL;
a4366af4	204
99218fe4 MCC	205	strcpy(v->name, "FM");
99218fe4 MCC	206	v->type = V4L2_TUNER_RADIO;
a4366af4	207
99218fe4 MCC	208	v->rangelow=(87*16000);
	209	v->rangehigh=(108*16000);
	210	v->rxsubchans =V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	211	v->capability=V4L2_TUNER_CAP_LOW;
	212	if(az_getstereo(az))
	213	v->audmode = V4L2_TUNER_MODE_STEREO;
	214	else
	215	v->audmode = V4L2_TUNER_MODE_MONO;
	216	v->signal=0xFFFF*az_getsigstr(az);
a4366af4	217
99218fe4 MCC	218	return 0;
99218fe4 MCC	219	}
a4366af4	220
a4366af4	221
99218fe4 MCC	222	static int vidioc_s_tuner (struct file file, void priv,
	223	struct v4l2_tuner *v)
	224	{
	225	if (v->index > 0)
	226	return -EINVAL;
a4366af4	227
99218fe4 MCC	228	return 0;
99218fe4 MCC	229	}
a4366af4	230
676b0ac7 MCC	231	static int vidioc_g_audio (struct file file, void priv,
	232	struct v4l2_audio *a)
	233	{
	234	if (a->index > 1)
	235	return -EINVAL;
	236
	237	strcpy(a->name, "Radio");
	238	a->capability = V4L2_AUDCAP_STEREO;
	239	return 0;
	240	}
	241
a0c05ab9 MCC	242	static int vidioc_g_input(struct file filp, void priv, unsigned int *i)
	243	{
	244	*i = 0;
	245	return 0;
	246	}
	247
	248	static int vidioc_s_input(struct file filp, void priv, unsigned int i)
	249	{
	250	if (i != 0)
	251	return -EINVAL;
	252	return 0;
	253	}
	254
	255
676b0ac7 MCC	256	static int vidioc_s_audio (struct file file, void priv,
	257	struct v4l2_audio *a)
	258	{
	259	if (a->index != 0)
	260	return -EINVAL;
	261
	262	return 0;
	263	}
	264
99218fe4 MCC	265	static int vidioc_s_frequency (struct file file, void priv,
	266	struct v4l2_frequency *f)
	267	{
	268	struct video_device *dev = video_devdata(file);
	269	struct az_device *az = dev->priv;
a4366af4	270
99218fe4 MCC	271	az->curfreq = f->frequency;
	272	az_setfreq(az, az->curfreq);
	273	return 0;
	274	}
	275
	276	static int vidioc_g_frequency (struct file file, void priv,
	277	struct v4l2_frequency *f)
	278	{
	279	struct video_device *dev = video_devdata(file);
	280	struct az_device *az = dev->priv;
	281
	282	f->type = V4L2_TUNER_RADIO;
	283	f->frequency = az->curfreq;
	284
	285	return 0;
	286	}
	287
	288	static int vidioc_queryctrl (struct file file, void priv,
	289	struct v4l2_queryctrl *qc)
	290	{
	291	int i;
	292
	293	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	294	if (qc->id && qc->id == radio_qctrl[i].id) {
	295	memcpy(qc, &(radio_qctrl[i]),
	296	sizeof(*qc));
	297	return (0);
1da177e4	298	}
99218fe4 MCC	299	}
	300	return -EINVAL;
	301	}
a4366af4	302
99218fe4 MCC	303	static int vidioc_g_ctrl (struct file file, void priv,
	304	struct v4l2_control *ctrl)
	305	{
	306	struct video_device *dev = video_devdata(file);
	307	struct az_device *az = dev->priv;
	308
	309	switch (ctrl->id) {
	310	case V4L2_CID_AUDIO_MUTE:
	311	if (az->curvol==0)
	312	ctrl->value=1;
	313	else
	314	ctrl->value=0;
	315	return (0);
	316	case V4L2_CID_AUDIO_VOLUME:
	317	ctrl->value=az->curvol * 6554;
	318	return (0);
1da177e4	319	}
99218fe4	320	return -EINVAL;
1da177e4 LT	321	}
1da177e4 LT	322
99218fe4 MCC	323	static int vidioc_s_ctrl (struct file file, void priv,
99218fe4 MCC	324	struct v4l2_control *ctrl)
1da177e4	325	{
99218fe4 MCC	326	struct video_device *dev = video_devdata(file);
	327	struct az_device *az = dev->priv;
	328
	329	switch (ctrl->id) {
	330	case V4L2_CID_AUDIO_MUTE:
	331	if (ctrl->value) {
	332	az_setvol(az,0);
	333	} else {
	334	az_setvol(az,az->curvol);
	335	}
	336	return (0);
	337	case V4L2_CID_AUDIO_VOLUME:
	338	az_setvol(az,ctrl->value);
	339	return (0);
	340	}
	341	return -EINVAL;
1da177e4 LT	342	}
	343
	344	static struct az_device aztech_unit;
	345
3ca685aa HV	346	static int aztech_exclusive_open(struct inode inode, struct file file)
	347	{
	348	return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0;
	349	}
	350
	351	static int aztech_exclusive_release(struct inode inode, struct file file)
	352	{
	353	clear_bit(0, &aztech_unit.in_use);
	354	return 0;
	355	}
	356
fa027c2a	357	static const struct file_operations aztech_fops = {
1da177e4	358	.owner = THIS_MODULE,
3ca685aa HV	359	.open = aztech_exclusive_open,
3ca685aa HV	360	.release = aztech_exclusive_release,
99218fe4	361	.ioctl = video_ioctl2,
078ff795	362	#ifdef CONFIG_COMPAT
0d0fbf81	363	.compat_ioctl = v4l_compat_ioctl32,
078ff795	364	#endif
1da177e4 LT	365	.llseek = no_llseek,
	366	};
	367
a399810c	368	static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
99218fe4 MCC	369	.vidioc_querycap = vidioc_querycap,
	370	.vidioc_g_tuner = vidioc_g_tuner,
	371	.vidioc_s_tuner = vidioc_s_tuner,
676b0ac7 MCC	372	.vidioc_g_audio = vidioc_g_audio,
676b0ac7 MCC	373	.vidioc_s_audio = vidioc_s_audio,
a0c05ab9 MCC	374	.vidioc_g_input = vidioc_g_input,
a0c05ab9 MCC	375	.vidioc_s_input = vidioc_s_input,
99218fe4 MCC	376	.vidioc_g_frequency = vidioc_g_frequency,
	377	.vidioc_s_frequency = vidioc_s_frequency,
	378	.vidioc_queryctrl = vidioc_queryctrl,
	379	.vidioc_g_ctrl = vidioc_g_ctrl,
	380	.vidioc_s_ctrl = vidioc_s_ctrl,
1da177e4 LT	381	};
1da177e4 LT	382
a399810c	383	static struct video_device aztech_radio = {
aa5e90af HV	384	.name = "Aztech radio",
	385	.fops = &aztech_fops,
	386	.ioctl_ops = &aztech_ioctl_ops,
	387	.release = video_device_release_empty,
a399810c HV	388	};
a399810c HV	389
99218fe4 MCC	390	module_param_named(debug,aztech_radio.debug, int, 0644);
	391	MODULE_PARM_DESC(debug,"activates debug info");
	392
1da177e4 LT	393	static int __init aztech_init(void)
	394	{
	395	if(io==-1)
	396	{
	397	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	398	return -EINVAL;
	399	}
	400
4286c6f6	401	if (!request_region(io, 2, "aztech"))
1da177e4 LT	402	{
	403	printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
	404	return -EBUSY;
	405	}
	406
3593cab5	407	mutex_init(&lock);
1da177e4	408	aztech_radio.priv=&aztech_unit;
4286c6f6	409
cba99ae8	410	if (video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4 LT	411	release_region(io,2);
	412	return -EINVAL;
	413	}
4286c6f6	414
1da177e4 LT	415	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
	416	/* mute card - prevents noisy bootups */
	417	outb (0, io);
	418	return 0;
	419	}
	420
	421	MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
	422	MODULE_DESCRIPTION("A driver for the Aztech radio card.");
	423	MODULE_LICENSE("GPL");
	424
	425	module_param(io, int, 0);
	426	module_param(radio_nr, int, 0);
	427	MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
	428
	429	static void __exit aztech_cleanup(void)
	430	{
	431	video_unregister_device(&aztech_radio);
	432	release_region(io,2);
	433	}
	434
	435	module_init(aztech_init);
	436	module_exit(aztech_cleanup);